[cvsnt] CVS HEAD stuck?!?

Bo Berglund Bo.Berglund at system3r.se
Mon Jul 2 13:28:17 BST 2007

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I also have zombies appearing from time to time, but they are orders of
magnitude less frequent now than a few years back.
But they still happen....
My diagnostic is that they appear more often if a large cvs operation
fails because of things like disk or network errors. Once stopped the
cvs process that was running at the time will never end by itself and it
will lock certain parts of the repository, such as a particular file or
Now the chance of getting another zombie is higher because it seems like
a new cvs operation that collides with the zombie can easily get to
zombie state itself.

We work almost 100% through WinCvs so the zombie creation might be
connected to this process on the client side.

Anyway, years ago I set up a scheduled task on the CVS server that runs
at 4.00 AM every night and kills all cvs processes running at the time
(kill cvs.exe). You need to use a kill program that can elevate to the
needed level to kill the cvs.exe process. I got mine from SysInternals.

After this we have no problems anymore.

But of course our server is not that busy, and especially at 4:00 in the
morning we are guaranteed noone is working. To safeguard the system you
might want to use a batch file like this:

net stop cvsnt
kill cvs.exe
net start cvsnt

Schedule it to run at the time of least cvs traffic every day.

This way you won't hit operations in the middle and kill valid cvs.exe

Best regards,

Bo Berglund

-----Original Message-----
From: cvsnt-bounces at cvsnt.org [mailto:cvsnt-bounces at cvsnt.org] On Behalf
Of Chuck Kirschman
Sent: den 29 juni 2007 23:37
To: cvsnt at cvsnt.org cvsnt downloads at march-hare.com @CVSNT on Twitter CVSNT on Facebook
Subject: Re: [cvsnt] CVS HEAD stuck?!?

SSPI.  I can go on to any server at any given time, stop the service, 
and there will be zombies.  I'm not sure how long it takes for them to 
reappear after restarting the services since I hate stopping CVS; there 
are usually 10-20 users actively doing something on any of our CVS 
servers at any given time.  Maybe this is one of those "big user" 


Arthur Barrett wrote:
> Chuck,
>>We've just come to accept that there will be zombies.  It is 
>>a bit more 
>>annoying to log into the servers just to restart the service.
>>We run cvsNT on win 2k3 servers.
> What connection protocol are you using?  SSPI, PSERVER etc?
> I haven't seen these type of hung processes since back in 2.0.x
> Regards,
> Arthur
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